@article{TMF_1976_28_2_a6,
     author = {V. A. Lyul'ka},
     title = {Quantum-mechanical two-center problem for the {Dirac} equation},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {211--222},
     year = {1976},
     volume = {28},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1976_28_2_a6/}
}